Interferometric Synthetic Aperture Radar (InSAR)

Interferometric Synthetic Aperture Radar (InSAR) is a remote sensing technique that uses radar signals from satellites to measure Earth's surface movements with high precision. By capturing multiple radar images over time, InSAR compares the phase differences in the signals to detect even tiny changes—like ground sinking, uplift, or displacement—often caused by earthquakes, volcanic activity, or groundwater movement. It provides detailed, cost-effective, and large-scale data about terrain changes without physical contact, helping scientists monitor geophysical processes and assess natural hazards accurately and efficiently.